I don't know if it's planned to be released in the game, but it would be a good idea to have a Demon Slayer Mark as an (Ultimate) or something like that.
It could be like this: like the series, it's presented as a disease and is transmissible. I'll explain how it works in the anime to give you an idea of what it can do.
SPOILERS
||(The Demon Slayer Mark in "Demon Slayer" is a special power that enhances the abilities of demon slayers, but it also comes at a significant cost. To awaken this mark, the user must reach certain physical states, such as a heart rate above 200 bpm and a body temperature above 39°C, in a situation of extreme danger. This mark is transmissible, but activating the mark results in a curse that prevents the user from surviving past 25 years, except in some exceptional cases, such as Yoriichi Tsugikuni, who lived to be 85. Therefore, the Demon Slayer Mark is not just a physical mark, but also a power that has serious consequences for the user.)||
There could be a temperature and bpm system. The mark can be obtained through training, fights like the final selection, and other boses, or of course if it is mastered to the maximum you can activate it without needing the bmp and temperature conditions
And instead of a lootbox system, blah blah blah, it can be created by the player themselves and make a build for it (like drawing, etc.), but of course, inappropriate builds will be banned.

x.kawaiikuchie.x You’ve Reached Level 5




